
section .data
msg db 'Hello world!',0Ah

section .text
global _start

_start:
    mov edx,13
    mov ecx,msg
    mov ebx,1
    mov eax,4
    int 80h

    ; sys_exit(0)
    mov ebx,0   ; 退出码0， 'No Errors'
    mov eax,1   ; sys_exit()
    int 80h